The reactants for photosynthesis are:
A. oxygen and carbon dioxide
B. water and carbon dioxide
C. ATP and oxygen
D. water and oxygen
E. glucose and carbon dioxide
Answer: B
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What components of eukaryotic cells leave a fossil record?
A. organelles B. nuclear membranes C. cell walls D. None of these choices are correct.
Pasteurization results in the sterilization of food products
Indicate whether this statement is true or false.
Which of the following is/are required with actin and myosin in order to initiate muscle contraction?
A. ATP B. calcium and phosphate C. phosphate D. calcium and ATP E. calcium
Which of the following statements describe a reason ribosomal genes are useful for comparing evolutionary relationships among organisms?
A. It is possible to compare the large subunit genes with the small subunit genes. B. Ribosomes of prokaryotes and eukaryotes are identical. C. There are many differences in these genes, even among closely related species. D. All organisms possess these genes and they can be compared with each other. E. These are the only genes that have been sequenced for every organism on Earth.